> > So - anyone have any ideas on how to scale a 0-90V source to 0-3.42V at > about a third of an amp current, efficiently and compactly, and without > requiring a seperate power supply? Why this voltage range? What are you trying to measure - voltage or current? --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.547 / Virus Database: 340 - Release Date: 2/12/2003 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.